1.pom依赖
引用spring-boot-starter-webflux依赖
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.3.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>demo</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-webflux</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
2.创建UDP/TCP Server
package com.example.demo;
import com.example.demo.handler.TcpDecoderHanlder;
import com.example.demo.handler.UdpDecoderHanlder;
import org.springframework.boot.CommandLineRunner;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.Bean;
import reactor.core.publisher.Flux;
import reactor.netty.tcp.TcpServer;
import reactor.netty.udp.UdpServer;
import java.time.Duration;
@SpringBootApplication
public class DemoApplication {
public static void main(String[] args) {
SpringApplication.run(DemoApplication.class, args);
}
@Bean
CommandLineRunner serverRunner(UdpDecoderHandler udpDecoderHandler, TcpDecoderHandler tcpDecoderHandler) {
return strings -> {
createUdpServer(udpDecoderHandler);
createTcpServer(tcpDecoderHandler);
};
}
private void createUdpServer(UdpDecoderHandler udpDecoderHandler) {
UdpServer.create()
.handle((in,out) -> {
in.receive()
.asByteArray()
.subscribe();
return Flux.never();
})
.port(8888)
.doOnBound(conn -> conn.addHandlerLast("decoder",udpDecoderHandler)) //可以添加多个handler
.bindNow(Duration.ofSeconds(30));
}
private void createTcpServer(TcpDecoderHandler tcpDecoderHandler) {
TcpServer.create()
.handle((in,out) -> {
in.receive()
.asByteArray()
.subscribe();
return Flux.never();
})
.doOnConnection(conn ->
conn.addHandler(tcpDecoderHandler)) //实例只写了如何添加handler,可添加delimiter，tcp生命周期，decoder，encoder等handler
.port(9999)
.bindNow();
}
}
3.数据解析handler（具体解析根据协议来）
解析UDP数据handler
package com.example.demo.handler;
import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.socket.DatagramPacket;
import io.netty.handler.codec.MessageToMessageDecoder;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Service;
import java.util.List;
@Service
public class UdpDecoderHandler extends MessageToMessageDecoder<DatagramPacket> {
private static final Logger LOGGER = LoggerFactory.getLogger(TcpDecoderHandler.class);
@Override
protected void decode(ChannelHandlerContext channelHandlerContext, DatagramPacket byteBuf, List<Object> list) throws Exception {
ByteBuf byteBuf1 = byteBuf.content();
int size = byteBuf1.readableBytes();
byte[] data = new byte[size];
byteBuf1.readBytes(data);
LOGGER.info(new String(data));
}
}
解析TCP数据handler
package com.example.demo.handler;
import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.codec.MessageToMessageDecoder;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Service;
import java.util.List;
@Service
public class TcpDecoderHandler extends MessageToMessageDecoder {
private static final Logger LOGGER = LoggerFactory.getLogger(TcpDecoderHandler.class);
@Override
protected void decode(ChannelHandlerContext channelHandlerContext, Object o, List list){
LOGGER.info("解析client上报数据");
}
}
4.测试工具
推荐使用SocketTool调试TCP/UDP协议
以上为个人经验，希望能给大家一个参考，也希望大家多多支持编程网。
